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12. Spezielle intraoperative Diagnostik

Author

Sigel, B., primary, Mach, J., additional, Ramos, J. R., additional, Duarte, B., additional, Donahue, P., additional, Peiper, H.-J., additional, and Bodner, E., additional

Published
1988
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13. Der Garten - ein Ort des Wandels. Perspektiven für die Denkmalpflege

Author

de Jong, E., Schmidt, E., and Sigel, B.

Subjects
Landschapsarchitectuur en Ruimtelijke Planning, duitsland, conservation, cultural history, netherlands, cultural heritage, germany, nederland, cultureel erfgoed, europa, monumenten, tuinen, yards, Landscape Architecture and Spatial Planning, gardens, erven, cultuurgeschiedenis, europe, monuments, conservering
Published
2006

28. Value of intraoperative sonography.

Author

Hölscher, A., Jakimowicz, J., Makuuchi, M., Rothmund, M., and Sigel, B.

Abstract

Use of intraoperative ultrasonography during biliary tract surgery offers several advantages. It is highly reliable in detecting and localizing pathology in the common bile duct and papillary area, it provides important information with regard to the anatomy and has a potential for wide application. The use of intraoperative ultrasonography is costeffective and with proper equipment and training the method can be easily learned and performed reliably. It is a valuable diagnostic tool, supporting the surgeon in operative decision making and worth to be recommended as an alternative and even a substitute for intraoperative radiography. We need to abandon often retoric debates on the role and place of intraoperative cholangiography and manometry in biliary surgery, become less dogmatic and more open minded dare to enter the age of technological advances not only in diagnostics but also in surgical techniques.[/p] [ABSTRACT FROM AUTHOR]

Published
1990
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29. Technique of ultrasonic detection and mapping of abdominal wall adhesions.

Author

Sigel, Bernard, Golub, Robert, Loiacono, Laurie, Parsons, Richard, Kodama, Issei, Machi, Junji, Justin, Jeffrey, Sachdeva, Ajit, Zaren, Howard, Sigel, B, Golub, R M, Loiacono, L A, Parsons, R E, Kodama, I, Machi, J, Justin, J, Sachdeva, A K, and Zaren, H A

Abstract

A technique for noninvasive ultrasound examination to detect and map abdominal wall adhesions is described. The examination is based on the demonstration of movement of abdominal viscera during real-time imaging. This movement is called viscera slide and either occurs spontaneously as a result of respiratory movement or may be induced by manual compression. Abdominal wall adhesions produce a restriction of viscera slide. Ultrasonic demonstration of restricted viscera slide has been used for the precise localization and mapping of abdominal wall adhesions prior to abdominal surgery. The technique may be particularly useful in providing safe initial access in patients undergoing laparoscopy who are at increased risk for trocar injury of viscera due to abdominal wall adhesions resulting from previous surgery or peritonitis. [ABSTRACT FROM AUTHOR]

Published
1991
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34. Ultrasonic evaluation of erythrocyte aggregation dynamics

Author

Consigny Pm, Irving F. Miller, Justin J, Sigel B, and Kim Sy

Subjects
Adult, Erythrocyte Aggregation, Male, medicine.diagnostic_test, Physiology, Chemistry, Dynamics (mechanics), Flow (psychology), Hematocrit, Erythrocyte aggregation, Red blood cell, Kinetics, medicine.anatomical_structure, Physiology (medical), medicine, Shear stress, Humans, Ultrasonic sensor, Oscillatory flow, Blood Flow Velocity, Biomedical engineering, Ultrasonography
Abstract

The dynamics of aggregation and disaggregation of blood of varying hematocrit in oscillatory flow in a distensible horizontal tube was determined by measuring the developing echo intensity of the blood samples with a 10 MHz B-mode ultrasonic scanner. Early aggregation could be detected within 10 sec. of stoppage of flow. The rate of echo intensity buildup and thus, presumably the rate of aggregation when flow was stopped was inversely related to hematocrit, as was the rate of echo intensity reduction when flow was resumed. Polycythemic blood of 60% hematocrit showed no echo intensity increase over 5 min. Increasing the shear stress when flow was resumed resulted in rapid decreases in aggregation. In all cases, disaggregation following flow resumption was faster than aggregation following flow stoppage.

Published
1989

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